littlekorea writes: IBM has released its latest mainframe — a machine Big Blue claims to be the biggest change in its architecture for 20 years. The killer detail — the zEnterprise integrates with smaller form factor servers to create a unified system. It only works, of course, if every new server you buy wears an IBM badge. So like Cisco's UCS, this solution might not wash well with those that have already invested in Dell or HP blade farms.